Dresden 2014 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 13: PhD Symposium: Magnon Plasmonics (with jDPG)

MA 13.4: Vortrag

Dienstag, 1. April 2014, 11:00–11:15, HSZ 04

Tuning of the transverse magneto-optical Kerr effect in magneto-plasmonic crystals — •L.E. Kreilkamp¹, M. Pohl¹, V.I. Belotelov^2,3,4, I.A. Akimov¹, A.N. Kalish^2,3,4, N.E. Khokhlov^2,3, V.J. Yallapragada⁵, A.V. Gopal⁵, M. Nur-E-Alam⁶, M. Vasiliev⁶, D.R. Yakovlev¹, K. Alameh⁶, A.K. Zvezdin^3,4,7, and M. Bayer¹ — ¹Experimentelle Physik 2, TU Dortmund, D-44221 Dortmund, Germany — ²Lomonosov Moscow State University, 119991 Moscow, Russia — ³Russian Quantum Center, 143025 Moscow, Russia — ⁴Prokhorov General Physics Institute, Russian Academy of Sciences, 119991 Moscow, Russia — ⁵Tata Institute of Fundamental Research, 400005 Mumbai, India — ⁶Electron Science Research Institute, Edith Cowan University, 6027 Joondalup, WA, Australia — ⁷Moscow Institute of Physics and Technology (State University), 141700, Dolgoprudny, Russia

Spectral properties of the transverse magneto-optical Kerr effect (TMOKE) in periodic metal-dielectric hybrid structures are studied, in particular with respect to the achievable magnitude. It is shown that the TMOKE is sensitive to the magneto-optical activity of the bismuth-substituted rare-earth iron garnet, which is used as dielectric material. For samples with larger Bi substitution level and, consequently, larger gyration constant, the magnitude of the TMOKE increases and reaches 13% in the case of a Bi_1.8 Lu_1.2Fe_3.6Al_1.4O₁₂ magnetic film. Further, it is demonstrated that the TMOKE vanishes at the high-symmetry points of the Brillouin zone (at the γ and X points). The role of different surface plasmon polaritons is discussed.